Submission #52480700

---

Source Code Expand

// LUOGU_RID: 156203043
#include<bits/stdc++.h>
#define Gc() getchar()
#define Me(x,y) memset(x,y,sizeof(x))
#define Mc(x,y) memcpy(x,y,sizeof(x))
#define d(x,y) ((m)*(x-1)+(y))
#define R(n) (rnd()%(n)+1)
#define Pc(x) putchar(x)
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define eb emplace_back
#define all(x) x.begin(),x.end()
using namespace std;using ll=long long;using db=double;using lb=long db;using ui=unsigned;using ull=unsigned long long;using pii=pair<int,int>;
const int N=300+5,M=2000+5,K=1000+5,mod=998244353,Mod=mod-1;const db eps=1e-8;const int INF=1e9+7;mt19937 rnd(181766);
#define Tp template<typename T>
#define Ts template<typename T,typename... Ar>
namespace Debug{
	Tp void _debug(char* f,T t){cerr<<f<<'='<<t<<endl;}
	Ts void _debug(char* f,T x,Ar... y){while(*f!=',') cerr<<*f++;cerr<<'='<<x<<",";_debug(f+1,y...);}
	#ifdef LOCAL
	#define gdb(...) _debug((char*)#__VA_ARGS__,__VA_ARGS__)
	#else 
	#define gdb(...) void()
	#endif
}using namespace Debug;
ll a,b,c;
void Solve(){
	int i,j;scanf("%lld%lld%lld",&a,&b,&c);
	a=b-a;c=c-b;
	if(!a&&!c){puts("1");return;}
	if(!a||!c){puts("2");return;}
	if(a==c){puts("5");return;}
	ll g=__gcd(a,c);a/=g;c/=g;
	ll f=1,g1=0,g2=0,ans=(a+c)*2;
	if(a<c) swap(a,c);
	while(c){
		ll t=a/c%mod;a%=c;swap(a,c);t-=!c;
		ll g3=g1;g1=g2;g2=(f*t+(mod-g3)*(t-1))%mod;gdb(ans,t,g1,g2,f,g1,g2,g3);
		ans+=(t*(t+1)/2%mod*f%mod-t*(t-1)/2%mod*g3%mod)*2;
		if(!c) ans-=(f*t+(mod-g3)*(t-1))*2%mod;
		f=(f*(t+1)+(mod-g3)*t)%mod;
		if(!c) ans+=f;
	}
	printf("%lld\n",(ans%mod+1+mod)%mod);
}
int main(){
	int t=1;
	scanf("%d",&t);
	while(t--) Solve();
	cerr<<clock()*1.0/CLOCKS_PER_SEC<<'\n';
}

Submission Info

Compile Error

Main.cpp: In function ‘void Solve()’:
Main.cpp:30:13: warning: unused variable ‘i’ [-Wunused-variable]
   30 |         int i,j;scanf("%lld%lld%lld",&a,&b,&c);
      |             ^
Main.cpp:30:15: warning: unused variable ‘j’ [-Wunused-variable]
   30 |         int i,j;scanf("%lld%lld%lld",&a,&b,&c);
      |               ^
Main.cpp:30:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   30 |         int i,j;scanf("%lld%lld%lld",&a,&b,&c);
      |                 ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp: In function ‘int main()’:
Main.cpp:50:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   50 |         scanf("%d",&t);
      |         ~~~~~^~~~~~~~~

Judge Result